- Lemon Juice
This is an old trick, allowing individuals to naturally lighten their hair. Working as a natural bleaching agent, lemon can lighten your hair without the associated fuss or safety-related issues. All you need is a lemon and the sun — that’s it. Although you may not experience drastic results after one use, repeated exposure to the sun will most certainly provide noticeable effects.
Either brush or rub lemon juice onto the desired area, then step out into the sun. As the acid combines with oxygen and the sun’s UV rays, your hair undergoes oxidation, resulting in natural highlights. Since the active ingredient, known as limonene, is most concentrated in the rind, you could also make a thin paste with lemon zest and juice.